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Finding the Fourth Proportional to 383,817.61, 529,659.81 and 211,735.71

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Solution

The fourth proportional to 383,817.61, 529,659.81 and 211,735.71 is: 292,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,817.61 : 529,659.81 = 211,735.71 : x
  2. Step 2: Convert to fraction form
    383,817.61/529,659.81 = 211,735.71/x
  3. Step 3: Cross multiply
    383,817.61x = 529,659.81 × 211,735.71
  4. Step 4: Simplify right side
    383,817.61x = 112,147,895,928.82
  5. Step 5: Solve for x
    x = 112,147,895,928.82/383,817.61
  6. Step 6: Final answer
    x = 292,190.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.